107 cfu were penetrated by S. Infantis and 4 out of 10 eggs inoculated
in 105 and 103 cfu, were penetrated by S. Infantis. Seven out of 10 eggs
were positive for bacterial penetration which were inoculated at the
dose rate of 107 cfu and incubated at 20 °C. Four and three out of ten
eggs each were found positive for bacterial penetration inoculated in
105 and 103 cfu, respectively.
Bacterial penetration was recorded in two out of 10 eggs
inoculated with 107 cfu and incubated at 4 °C. S. Infantis penetration
was not recorded in any of the egg shells from the remainder of the
treatments at 4 °C. For the eggs incubated at 37 °C, there were
significant differences (pb0.05; pb0.01) between egg shell translucencies
of penetrated and non penetrated egg shells inoculated in 105
and 103 cfu (Fig. 7). The bacterial penetration was recorded along the
translucent patches of the egg shell. For the eggs incubated at RT,
there were significant differences (pb0.03) between egg shell
translucencies of penetrated and non penetrated egg shells inoculated
in 107 cfu (Fig. 8).